Split-rim construction.



P. & N. M. SPRANGER.

\ SPLIT RIM CONSTRUCTION. APPLICATION FILED JAN. 11, 1912.

1,088,108, Patented Feb. 24, 1914.

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FnANKsPRANGEa Ami NIcHoLasA M.. SPRANGER; or DETROIT, MICHIGAN.

SPLIT-'RIM CONSTRUCTION.

Applicationled January 11, 1912. SeriaLNo. 670,682..

To all 'whom 'it may. concern Bev it known that we, FRANK SPR'ANGEII-and NICHOLAS MIISPRANGER, citizens ofthe United States of America,residing at Detroit, inthe county of Wayne and' State of Michigan, haveinvented certain new and useful Improvements in; Split-Rim Construction,of whichthe following isa speciaccompanying drawings. This inventionretates to improvements in wheel rims and more particularly to splitrims for pneumatic and other vehicle tires. The object of the inventionis to provide a simple and conveniently operated device for drawing theadjacent ends of the split rim toward each V otherand detachablysecuring them in place, the invention consisting in the mattershereinafter set forth and moreparticularljT pointed out in the claims,reference being had to the accompanyingdrawing, in

. which Figure 1, is a side elevation of a portion of a wheel with a rimin place thereon embodying the invention, the parts being broken away toshow the construction; Fig. 22 is an enlarged detail of a portion of ther1m showing the fastening means in plan view; Fig. 3, is a longitudinalsection of Fig. 2; and Fig. 4, is a transverse section on the line IV ofF ig. 2. l

As shown in the drawing 1 represents a wheel of an desired form andconstruction provided with a Wood felly 2 and secured upon the woodfelly in the usual manner is a n channel rim 3. A demountable rim 4having inturned side flanges 5 to `engage and hold a pneumatic tire 6,is secured in place upon the channel rim 3. This demountab-le riin issplit or cut in two transversely, at two points forming a short section7 provided with an opening for the valve stein 8 which extends inwardthrough an opening in the channel rim and felly.

To draw the two ends of the split riin toward the rim section 7 and thuscontract the demountable rim upon the channel rim, a locking bar 9 ispivotally attached to one of said ends by .means of a stud 10' o n therim having anelongated head to engage a slot 11 in the bar. Said slotextends longitudinally of the bar and the head on thestud extendstransversely of the rim and thusthe bar may be engaged with the stud byturning the same at right angles to the rim and Specification of LettersPatent.

'member with the first of the series of lugs Patented Feb. 24,1914.

slipping it .over the head of the stud. It may then be turned upon thestud longitudina-lly-of the rim into operative position and will be heldfrom disengagement-'with the'stud by itselongated head. The opposite endof the bar is provided with a slot 12 extending inward from said end toreceive the. valve stem.8, said bar being of a length toextend .acrosssaid section and into engagement with av locking member on theopposite-end of the demountable rim. This locking member comprises astud 13 rigidly secured to the end ofthe rim and ex' tending inward intothe channel of the channel rim 3. Sleeved upon the stud lto turn freel-ythereon is a'locking member 14 whicl is held in place thereon by a headontlie stud. This lockinf member is provided with a laterally extendingflange having a rib or thread 15 on its lower side which is arranged inthe form of a spiral around the axis lupon which the mcmberturns. Uponthe inner face of the locking bar 9 is a series ofV lugs 16 whichperform 'the function of threads to engage with the spiral thread or rib15. The member 14 is .provided with a hexagonal end Orhead by means ofwhich it 'may be turned upon its stud by the engagement of a suitablewrench therewith.

In assembling the demountable rim it is contracted by bringing theslotted end of the locking bar beneath the locking member andengagingthe end of the thread 15 of said 16. Then by turning the lockingmember, the thread will, by reason of 'its spiral construction, draw thelocking bar longitudinally and thus pull the two ends ofthe split rimtoward the rim section 7 which will not be disturbed by such movement.The liability of breaking or injuring the valve stem is thus obviatedand with a few turns of the locking member by means of a wrench, theends of the split rim are tightly clamped together before placing uponthe channell rim. By providing a channel shaped rim to support thedemountable rim, the space required for the locking means between thefelly and the demountable rim is practically all closed by the sideflanges of the channel.

In placing the demountable rim upon the channel rim, the valve stem 8 ofthe tire is first inserted through the opening in the top of the fellyand the lower eige of the demountable rim readily. slipped into placelaterally upon the channel rim and secured in lace by any suitablelocking means as in t eusual manner. Y

Having thus fully described our invention what we claim is :4-

- rim to engage said bar and draw the ends of the rim toward said rimsection.

2. The combination of a split rim provided with means for holding a tirein place thereon, a short rim section interposed between t-he ends ofsaid split rim, an inwardly extending valve stem on the tire, a lockingbar attached to one end of the split rim and provided with alongitudinal slot for said stem,v a rotatable member secured to theother end of the split rim and engaging the locking bar to draw the endsof the split rim toward the rim section.

3. The combination of a split rim, a bar pivotally attached to one endof said rim,

-' a rotatable member secured upon the other end of the rim and providedwith a spiral thread on its under side and an interrupted thread on-theadjacent side of the bar engaged by the thread to draw the ends of therim toward each other when the member is turned.

4.V The combination of a split rim, a locking bar pivotally attached atone end to one end of the rim, a stud secured to the other end of therim, a rotatable locking member on the stud provided with a spirallyarranged thread -and a series of members on the bar adapted to beengaged by said thread. A

5. The combination with an inner wheel` rim having outwardly extendingflanges, a

demountable rim adapted to engage and rest upon sald flanges of theinner rim and pro- .vided with-means for holding a tire, saiddemountable rim be1ngsevered transversely f at one side, a rim sectioninterposed between the severed ends of the demountable rim and providedwith an opening for receiving a valve stem of the tire, and meanscomprising a slotted bar and rotatable member respectively attached tothe severed ends of the demountable rim, said bar extending across t-herim section between said demountable rim and inner rim to draw the endsof the severed rim toward the rim section, and hold the same contracted.

6. The combination of a split rim, a locking bar pivotally attached toone end of said rim, a stud secured to the other end of said rim, alocking member upon the stud to turn freely thereon and provided with aspirally arranged thread, and a series of inwardly extending lugs on thebar adapted to be engaged by the spiral thread.

7 The combination of a split rim, a short rim section interposed betweenthe ends of said split rim having an opening to receive and hold a valvestem, a locking bar pivotally and detachably attached to one end of thesplit rim and provided with a longitudinal slot extending inward fromits opposite end to receive said stem, a' stud upon the opposite end ofthe split rim extending inward through said slot in the bar, a lockingmember upon the stud adapted to turn freely thereon and provided with alaterally vextending iange having a spirally arranged thread projectingtoward the face ofsaid bar, and a series of lugs on the bar adapted tobe engaged by the spiral thread.

In testimony whereof we afiix our signatures in presence of twowitnesses.

FRANK SPRANGER. NICHOLAS M. SPRANGER. Witnesses:

Orro F. BARTLLEL, C. R. STICKNEY.

